def measurements(deveui):
'''
Returns all measurements of a sensor node
'''
return jsonify(list_to_dict((Sensor.select(Sensor, Measurement)
.join(Measurement)
.where(Sensor.deveuid == deveui)
.get())
))
def weather_data():
'''
Handles data recieved from the weather sensors
the payload has the folowing format:
['tt', 'xx', 'xx', 'xx', 'xx']
'tt' is the measurement type
mapped via the 'measurement_type_map'
the 'xx' values represent a number in the format of
'xxxx.xxxx' (four digits bevore the and four after the dot)
'''
# remove namespace for parsing
xml = ElementTree.fromstring(re.sub(' xmlns="[^"]+"', '', request.data, count=1))
measurement = {
'deveui': None,
'time': None,
'payload_hex': None }
measurement_type_map = {
'00': 'temparature',
'01': 'lumen',
'02': 'light' }
for child in xml:
print(child.tag.lower())
if child.tag.lower() in measurement:
print('added {0}'.format(child.text))
measurement[child.tag.lower()] = child.text
sensor, created = Sensor.get_or_create(
deveuid=measurement['deveui'],
position='47.3846794:8.5329564')
Measurement.create(
timestamp=datetime.datetime.strptime(measurement['time'][:19], '%Y-%m-%dT%H:%M:%S'),
type=measurement_type_map[measurement['payload_hex'][:2]],
value=measurement['payload_hex'][2:],
sensor=sensor).save()
sensor.save()
return jsonify({'message': str(xml)})
def graph_data(deveui):
'''
Get simple csv data for a grap
'''
data = (Sensor.select(Sensor, Measurement)
.join(Measurement)
.where(
Sensor.deveuid == deveui &
Measurement.type == 'temparature')
.get())
measurements = []
for messung in data.measurements:
measurements.append({
'timestamp': messung.timestamp,
'type': messung.type,
'value': dafuqnumber(messung.value)
})
return jsonify({'data': measurements})
def sensors():
'''
Returns all weather nodes
'''
return jsonify(list_to_dict(Sensor.get()))